I want to live a relaxing life as a semi-retired adventure is a Manga/Manhwa/Manhua in english language, Action series, english chapters have been translated and you can read them here. You are reading chapters on www.mgeko.cc fastest updating comic site. The Summary is

Henry, a young adventurer who was at the forefront of the war with the demons. With top-class abilities, he moved to a safer city behind him for some reason. That is … to spend the rest of his life! The second life, which begins with “City of Flowers and Water”, begins here!